they want people coming into the city to keep a close eye on their stuff and their surroundings. >> i keep it very tight. [ laughter ] >> i don't keep it exposed. you can not trust anybody. the end of the day, never safe. >> reporter: other woman told us they keep their purses close to their bodies and many men keep their wallets in their front pockets. >>> investigators are working to right a commuter train in a deadly derainment in new york city. four people died when the train ran off of the rails as it rounded a bend in the bronx. 60 others were hurt. investigators are focusing on the trains breaks. >> reporter: a 7-car metro train jumped the track with the first car coming to the stop right at the waters edge. the derailment happened on a curve section of the track where the harlem and hudson rivers meet. >> it started to make a shifting noise like with the tracks and the next thing i know two people from across the train come ming at me and fell on top of me. >> reporter: about 100 passengers were on the train traveling from new york to grand central terminal. the bodies of 3 vi